Junkyard, a town of endless rain... With his four companions, Serf, the main character and a member of a tribe called Embryon, sets out for Nirvana, a land that can only be reached by the champions of Junkyard. They devote themselves to fighting against the never-ending resistance mustered by other tribes. In the midst of chaos, a mysterious object, the Pod, suddenly appears. Countless spheres of light are emitted by the Pod and infect Serf and his comrades, awakening their demonic power